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253085 = 5721033
BaseRepresentation
bin111101110010011101
3110212011112
4331302131
531044320
65231405
72102600
oct756235
9425145
10253085
11163168
12102565
138b271
1468337
154eec5
hex3dc9d

253085 has 12 divisors (see below), whose sum is σ = 353628. Its totient is φ = 173376.

The previous prime is 253081. The next prime is 253103. The reversal of 253085 is 580352.

It can be written as a sum of positive squares in 2 ways, for example, as 182329 + 70756 = 427^2 + 266^2 .

It is not a de Polignac number, because 253085 - 22 = 253081 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 253085.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 253085.

It is not an unprimeable number, because it can be changed into a prime (253081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 272 + ... + 761.

It is an arithmetic number, because the mean of its divisors is an integer number (29469).

2253085 is an apocalyptic number.

It is an amenable number.

253085 is a deficient number, since it is larger than the sum of its proper divisors (100543).

253085 is a wasteful number, since it uses less digits than its factorization.

253085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052 (or 1045 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 253085 is about 503.0755410473. The cubic root of 253085 is about 63.2541176424.

The spelling of 253085 in words is "two hundred fifty-three thousand, eighty-five".

Divisors: 1 5 7 35 49 245 1033 5165 7231 36155 50617 253085